Records
Author
Samuelsen, A
Title
Modeling the Effect of Eddies and Advection on the Lower Trophic Ecosystem in the Northeast Tropical Pacific
Type
$loc['typeManuscript']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
Keywords
Physical-Biological Interactions, Marine Ecosystem Modeling, Pacific Ocean, Gulf Of Tehuantepec, Costa Rica Dome, Cross-Shelf Transport, Eddies
Abstract
A medium complexity, nitrogen-based ecosystem model is developed in order to simulate the ecosystem in the northeast tropical Pacific. Several physical processes have major impact on the ecosystem in this region, most importantly intense wind jets along the coast and upwelling at the Costa Rica Dome (CRD). The ecosystem model is run “offline”, using a realistic physical ocean model hindcast as input. The physical model is a subdomain of the global Navy Coastal Ocean Model, which is a hybrid sigma-z level model. The model assimilates Modular Ocean Data Assimilation System temperature and salinity profiles derived from altimetry and sea surface temperature data. The model is forced by daily heat and momentum fluxes, and therefore captures short-term wind events such as the Tehuantepec jet. Because the model has high horizontal resolution (~1/8 degree) and assimilates sea surface height data, it has a realistic representation of eddies and mesoscale variability. The ecosystem model includes two nutrients (nitrate and ammonium), two size-classes of phytoplankton, two size-classes of zooplankton, and detritus. The model is run for 4 years from 1999 to 2002, with analyses focused on 2000-2002. The model is validated using SeaWiFS data and ship-based observations from the STAR-cruises (Stenella Abundance Research Project) of 1999 and 2000. The northernmost and most intense of the wind jets along Central America is the Tehuantepec jet. The Tehuantepec jet is responsible for upwelling large amounts of nutrient rich water south of the Gulf of Tehuantepec. The jet also occasionally produce large anti-cyclonic eddies that transport organic matter away from the coast. Because organic matter that is transported into the open ocean will eventually sink to the deep ocean, this has implications for the carbon export in this region. The model results are used to calculate cross-shelf fluxes in this region in order to estimate how much organic material is transported across the shelf break. Results show that at the Gulf of Tehuantepec there is high offshore export of organic material, particularly during eddy generation events, but also in fall. The highest export is on the order of 10 Mg C per meter of coastline per day and happens during eddy events. During these events there is a comparable onshore flux to the south of the gulf. Typically there is onshore flux to the south of the gulf during the summer. The model estimated transport away from the coast at the Gulf of Tehuantepec is 167 Tg C/year, and the onshore transport to the south of the gulf is 704 Tg C/year. The second subject of interest is the CRD. In this region, upwelling at the surface is caused by Ekman upwelling during the summer, although the dome is thought to be present at depth throughout the year. The doming of the isotherms below the thermocline is a result of vortex stretching and is decoupled from the wind-driven processes at the surface. A mass-balance budget is calculated at the CRD, and the horizontal and vertical fluxes are related to the abundance of plankton at the dome. There is upwelling (7.2X10-2 Sv ) at the dome throughout the year, but around the location of the dome (90° W), the upwelling is largest in the winter. Further west, input of nutrients from below is larger in the fall and summer. The results suggest that about 80% of the nitrate that is supplied to the dome during summer is actually brought up to the west of the dome and transported eastward by the North Equatorial Counter Current.
Address
Department of Oceanography
Corporate Author
Thesis
$loc['Ph.D. thesis']
Publisher
Florida State University
Place of Publication
Tallahassee, FL
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
591
Permanent link to this record
Author
Schoof, J.T. ; Arguez, A. ; Brolley, J. ; O'Brien, J.J.
Title
A new weather generator based on spectral properties of surface air temperatures
Type
$loc['typeJournal Article']
Year
2005
Publication
Agricultural and Forest Meteorology
Abbreviated Journal
Agricultural and Forest Meteorology
Volume
135
Issue
1-4
Pages
241-251
Keywords
new weather generator ; spectral methods ; stochastic modeling ; surface air temperatures
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0168-1923
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
444
Permanent link to this record
Author
Shin, D. W. ; LaRow, T. E. ; Cocke, S. ; O'Brien, J. J.
Title
The role of the CLM2 in the surface air temperature and precipitation of the FSU climate model
Type
$loc['typeReport']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Research Activities in Atmospheric and Ocean Modeling, CAS/JSC Working Group on Numerical Experimentation
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
904
Permanent link to this record
Author
Shin, D.W. ; Cocke, S. ; LaRow, T.E. ; O'Brien, J.J.
Title
Seasonal Surface Air Temperature and Precipitation in the FSU Climate Model Coupled to the CLM2
Type
$loc['typeJournal Article']
Year
2005
Publication
Journal of Climate
Abbreviated Journal
J. Climate
Volume
18
Issue
16
Pages
3217-3228
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0894-8755
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
450
Permanent link to this record
Author
Smith, S. R.
Title
Shipboard Automated Meteorological and Oceanographic System (SAMOS) Initiative
Type
$loc['typeReport']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
cdrom
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
World Meteorological Organization
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
3rd Session of the JCOMM Ship Observation Team
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
898
Permanent link to this record
Author
Smith, S. R.
Title
Shipboard Automated Meteorological and Oceanographic Systems: A Key Component of an Ocean Observing System
Type
$loc['typeConference Article']
Year
2005
Publication
9th Symposium on Integrated Observing and Assimilation Systems of Atmosphere, Oceans, and Land Surfaces, American Meteorological Society, San Diego, California, USA
Abbreviated Journal
Volume
Issue
Pages
cdrom
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
NOAA
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
900
Permanent link to this record
Author
Smith, S. R. ; Kent, E. C. ; Cook, S. K.
Title
Shipboard Automated Meteorological and Oceanographic System (SAMOS) Initiative
Type
$loc['typeReport']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
World Meteorological Organization
Place of Publication
Brest, France
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
3rd Session of the JCOMM Ship Observation Team
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
899
Permanent link to this record
Author
Subrahmanyam, B. ; Murty, V. S. N. ; O'Brien, J. J.
Title
New Sea Surface Salinity Product in the Tropical Indian Ocean
Type
$loc['typeReport']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
CAS/JSC Working Group on Numerical Experimentation
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
897
Permanent link to this record
Author
Subrahmanyam, B. ; Murty, V.S.N. ; Sharp, R.J. ; O'Brien, J.J.
Title
Air-sea Coupling During the Tropical Cyclones in the Indian Ocean: A Case Study Using Satellite Observations
Type
$loc['typeJournal Article']
Year
2005
Publication
Pure and Applied Geophysics
Abbreviated Journal
Pure appl. geophys.
Volume
162
Issue
8-9
Pages
1643-1672
Keywords
tropical cyclones ; Indian Ocean ; EOL ; OLR ; sea-surface salinity ; mixed layer depth ; Remote Sensing
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0033-4553
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
452
Permanent link to this record
Author
Weissman, D. E. ; Apgar, G. ; Tongue, J. S. ; Bourassa, M. A.
Title
Corrections to the SeaWinds scatterometer wind vectors by removing rain effects
Type
$loc['typeJournal Article']
Year
2005
Publication
Bulletin of the American Meteorological Society
Abbreviated Journal
Volume
86
Issue
Pages
621-622
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
907
Permanent link to this record